Cup holder



FIG. 1 is a right side perspective view of a cup holder;

FIG. 2 is a left side view of the cup holder;

FIG. 3 is a right side view of the cup holder;

FIG. 4 is a front view of the cup holder; and,

FIG. 5 is a top view of the cup holder.

The broken lines are for illustrative purposes only and form no part of the claimed design. The bottom and rear side of the cup holder are not visible during normal use and form no part of the claimed design. 

CLAIM The ornamental design for a cup holder, as shown and described. 